Just as the mobile phone and media player continue to evolve into one device, so too are their respective accessories. Many electronics makers, for example, are trying to find the right formula for Bluetooth headsets that will work equally well for phone calls and music.

Sony is launching its latest effort in this category with a new pair of Bluetooth 2.0 headphones for the Japanese market. The DR-BT140Q has a built-in microphone, comes in various colors, and claims 12 hours of playing time with its lithium battery, according to Newlaunches. We're a little curious about those cords hanging from the earpieces, given that they're supposed to be wireless, but they're probably just meant to connect the two cans. In any case, remember to keep the volume under control.